共用题干Old and ActiveIt is well一known that life

共用题干

Old and Active
It is well一known that life expectancy is longer in Japan than in most other countries.A______(51) report also shows that Japan has the longest health expectancy in the world.A healthy long life is the result of the______(52)in social environment?
Scientists are trying to work______(53)exactly what keeps elderly Japanese people so healthy,and whether there is。lesson to be_____(54)from their lifestyles for the rest of us.Should we
______(55)any changes to our eating habits,for instance,or go jogging each day before breakfast?Is there some secret______(56)in the Japanese diet that is particularly______(57)to the human body?
Another factor______(58)to the rapid population aging in Japan is a decline in birthrate.Although longer life should be celebrated,it is_____(59)considered a social problem.The number of older people had_(60)in the last half century and that has increased pension and medical costs.The country could soon be_(61)an economic problem,if there are so many old people to be looked ______(62),and relatively few younger people working and paying taxes to support them.
______(63)the retirement age from 65 to 70 could be one solution to the problem.Work can give the elderly a______(64)of responsibility and mission in life.It’s important that the elderly play active ______(65)in the society and live in harmony with all generations.

59._________ A:therefore B:actually C:even D:however